79 lines
3.7 KiB
C++
79 lines
3.7 KiB
C++
/*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "CryptoAlgorithmRSA_OAEP.h"
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#if ENABLE(WEB_CRYPTO)
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#include "CommonCryptoUtilities.h"
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#include "CryptoAlgorithmRsaOaepParams.h"
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#include "CryptoKeyRSA.h"
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namespace WebCore {
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static ExceptionOr<Vector<uint8_t>> encryptRSA_OAEP(CryptoAlgorithmIdentifier hash, const Vector<uint8_t>& label, const PlatformRSAKey key, size_t keyLength, const Vector<uint8_t>& data)
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{
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CCDigestAlgorithm digestAlgorithm;
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if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
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return Exception { OperationError };
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Vector<uint8_t> cipherText(keyLength / 8); // Per Step 3.c of https://tools.ietf.org/html/rfc3447#section-7.1.1
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size_t cipherTextLength = cipherText.size();
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if (CCRSACryptorEncrypt(key, ccOAEPPadding, data.data(), data.size(), cipherText.data(), &cipherTextLength, label.data(), label.size(), digestAlgorithm))
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return Exception { OperationError };
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return WTFMove(cipherText);
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}
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static ExceptionOr<Vector<uint8_t>> decryptRSA_OAEP(CryptoAlgorithmIdentifier hash, const Vector<uint8_t>& label, const PlatformRSAKey key, size_t keyLength, const Vector<uint8_t>& data)
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{
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CCDigestAlgorithm digestAlgorithm;
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if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
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return Exception { OperationError };
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Vector<uint8_t> plainText(keyLength / 8); // Per Step 1.b of https://tools.ietf.org/html/rfc3447#section-7.1.1
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size_t plainTextLength = plainText.size();
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if (CCRSACryptorDecrypt(key, ccOAEPPadding, data.data(), data.size(), plainText.data(), &plainTextLength, label.data(), label.size(), digestAlgorithm))
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return Exception { OperationError };
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plainText.resize(plainTextLength);
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return WTFMove(plainText);
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}
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ExceptionOr<Vector<uint8_t>> CryptoAlgorithmRSA_OAEP::platformEncrypt(const CryptoAlgorithmRsaOaepParams& parameters, const CryptoKeyRSA& key, const Vector<uint8_t>& plainText)
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{
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return encryptRSA_OAEP(key.hashAlgorithmIdentifier(), parameters.labelVector(), key.platformKey(), key.keySizeInBits(), plainText);
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}
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ExceptionOr<Vector<uint8_t>> CryptoAlgorithmRSA_OAEP::platformDecrypt(const CryptoAlgorithmRsaOaepParams& parameters, const CryptoKeyRSA& key, const Vector<uint8_t>& cipherText)
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{
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return decryptRSA_OAEP(key.hashAlgorithmIdentifier(), parameters.labelVector(), key.platformKey(), key.keySizeInBits(), cipherText);
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}
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} // namespace WebCore
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#endif // ENABLE(WEB_CRYPTO)
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